/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Selections/GeometrySelectionUtil.h
Combine the elements of SelectionA and SelectionB using the provided CombineMode, and store the result in SelectionA.
true if the selectins were compatible (ie both the same type) and of supported geometry/topology type.
namespace UE { namespace Geometry { bool UE::Geometry::CombineSelectionInPlace ( [FGeometrySelection](API\Plugins\DynamicMesh\Selections\FGeometrySelection) & SelectionA, const [FGeometrySelection](API\Plugins\DynamicMesh\Selections\FGeometrySelection) & SelectionB, [EGeometrySelectionCombineModes](API\Plugins\DynamicMesh\Selections\UE__Geometry__EGeometrySelection-_1) CombineMode ) } }